Guitar or similar instrument



FIG. 1 is a front and top perspective view of a guitar or similarinstrument showing my new design;

FIG. 2 is a rear elevational view;

FIG. 3 is a left side elevational view;

FIG. 4 s a right side elevational view; and

FIG. 5 is a bottom plan view.

The ornamental design for a guitar or similar instrument, substantiallyas shown and described.